Adding upstream version 255.4.upstream/255.4

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 28 insertions, 0 deletions

diff --git a/src/basic/mempool.h b/src/basic/mempool.h
new file mode 100644
index 0000000..ba588af
--- /dev/null
+++ b/src/basic/mempool.h
@@ -0,0 +1,28 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
+
+#include <stdbool.h>
+#include <stddef.h>
+
+struct pool;
+
+struct mempool {
+        struct pool *first_pool;
+        void *freelist;
+        size_t tile_size;
+        size_t at_least;
+};
+
+void* mempool_alloc_tile(struct mempool *mp);
+void* mempool_alloc0_tile(struct mempool *mp);
+void* mempool_free_tile(struct mempool *mp, void *p);
+
+#define DEFINE_MEMPOOL(pool_name, tile_type, alloc_at_least) \
+static struct mempool pool_name = { \
+        .tile_size = sizeof(tile_type), \
+        .at_least = alloc_at_least, \
+}
+
+__attribute__((weak)) bool mempool_enabled(void);
+
+void mempool_trim(struct mempool *mp);